B rake-beam



(No Model.)

W. A. ROBERTSON & H. CARLTON.

BRAKE BEAM.

Patented May 16,1893.

WITNEEEEE INVENTURE: W W W @mw/wm UNEEEE STATES PATENT OFFICE.

WILLIAM A. ROBERTSON AND HOWARD CARLTON, OF BALTIMORE, MARY- LAND, ASSIGNORS TO THE CHICAGO RAILIVAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS.

BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No. 497,728, dated May 16, 1893.

Application filed December 5, 1892. Serial No. 454-180. (No model.)

To 6.2% whom, it may concern: The brake-shoe head, E, has a base-flange,

Be it. known that we, WILLIAM A. ROBERT- d, which fits against the front of the box he- SON and HOWARD CARLTON, citizens of the tween flanges, f,thereon and is also provided United States, residing 'at Baltimore city, in with lips, e, which take over the top and hotthe State of Maryland, have invented certain tom of the box. The brake-shoe head is senew and useful Improvements in Brake-Beams cured to the box by bolts, g, which have heads, for Railway-Cars, of which the following is a 9, taking overthe front side of the base-flange, specification. d, and extend through the box to the rear side This invention relates to an improvement of the beam where nuts, 9 are screwed upon to in trussed metallic brake beams for railway them. These two securing bolts are placed cars, and is illustrated in the accompanying diagonally of the boX,-one at the inner end drawings, in which of the box and on the upper side of the truss- Figure 1 shows a topview of the brakerod, and the other at the outer end of the box beam with one end in section. Fig. 2 shows and on the under side of said rod. r5 a detail back view of one end of the brake- A block, F, is fitted in the angle at the midbeam. Fig. 3 shows a central cross-section dle of the truss-rod and straddles the center on line 3-3 of Fig. 1; Fig. 4, a section on inside web of said truss-rod; this block has line 4-4 of Fig. 1; Fig. 5, an enlarged detail a threaded stud,h, and the kingpost or strut, side-view of brake-shoe and head with beam G, which is slotted as usual. to receive the 20 in section taken on line 5-5-- of Fig. 1; Fig. brake-lever, has a threaded hole in its end- 6, a section on line 66 of Fig. 1. Fig. 7 bar which receives the said stud, h. The opshows detail view of bolt and nut for securposite end of the king-post fits against the ing brake-shoe to brake-beam. Fig. 8 shows inner side of the main member, A, which is a cross-section of the main member of the made solid at this part and a bolt, 2, extends 25 beam taken on line 8-8 of Fig. 1. through the end 01": the king-post and through In the drawings, the letter, A, designates the said solid part of the main member and has a main member of the beam, which is crossnut, j, on its end behind the said main memshaped in transverse section see Fig. 8, and her. With this construction the king-post is has a slight curvature from end to end to reversible, i. 6., it maybe turned from onein- 0 stiffen it under action. clined position to the opposite position to re- So The letter, B, designates the angle trussceive the brake-lever from either side of the rod which is T-shaped in cross-section and has car. The nut, j, is tightened up to set the round end-portions, B, with screw-threaded strut firmly, and locked, and said strut may be extremities. Square boxes, C, are formed inreversed by inserting the brake-lever through 5 tegral with the main member, A, at each end its slot, and then turning it over, the strut of the same and each box comprises an elonturning on the bolt, 71, and not affecting it. gated semi-tubular socket, D, which extends Hence the bolt does not turn but remains tight. diagonally of the box and receives one of the Thus the strut may be reversed without loosrounded ends of the truss-rod, the front side ening any of the parts. 40 of the socket being open. The said socket The king-post or strut fits between two diahas a tubular outer end, I), which projects metrically-opposite stops, 7c, projecting from from the rear outer corner of the box, and has the front side of the main member, A, and is an end-surface against which a nut, a, on the itself provided with a pair of stop-lugs, Z, on threaded extremityof said truss-rod isscrewed. the upper side, to engage said stops, 7%), in the 45 This socket is supported and strengthened by two positions of the strut and prevent further 5 webs, c, on the top, bottom and back sides. movement of the latter on its pivots. The box has a closed outer end but its front The strain on this improved brake-beam side and a portion of its inner end are open will be equally distributed throughout its to facilitate the introduction of the rounded parts. By forming the end-boxes integral 50 end of the truss-rod into the socket. with the main member of the beam, the con- I00 struction is greatly simplified and cheapened. Moreover the pressure of the nuts on the ends of the truss-rod is directly against the endsurfaces of the main member, which insures strength and stability.

The construction at the ends of the beam enables brake-shoe heads to be applied which are constructed to receive different, forms of brake-shoes.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a trussed metallic brake-beam, the combination of a main member having integral boxes at each end each box comprising a socketwhich extends diagonallyfro m the front to the rear side of the box; said boxes provided withvertical flanges f, a truss-rod having end-portions which engage through said sockets and have nuts on their ends bearing against the end-surfaces of the boxes and brake-shoeheads fitted to the boxes, between said vertical flanges.

2. In a'trussed metallic brake-beam, the combination of a main member having inte gral boxes at each end each box comprising a socket which extends diagonally from the front to the rear side of the'box; a truss-rod having end-portions which engage through 1 said'sockets and have nuts ontheir ends bear ing against the end-surfaces of the boxes; 1

brake-shoe heads having base-flanges which fit against the front sides of the boxes; and

bolts extending through the boxes and having heads which take over the flanges of the brake-shoe heads.

3. In a trussed metallic brake-beam, the combination of a main member having stoplugs at the middle part; an angle truss-rod suitably connected at the ends with the said main member; aking-post or strut between the main member and truss-rod at the middle of the beam and mounted at one end on a stud projecting from the truss-rod and fitting against the front side of the main member at the other end and provided with lugs to stop against those of the said main member; and a bolt extending through the end of the strut and through the-said main member and having a nut on its end behindthe main member.

4. In a trussed metallic brake-beam, the combination of amain member having boxes 'at its ends; an angle truss-rod which is T- shaped in cross-section andhas rounded-ends fitting through the boxes of the main member and secured by nutsbearingagainst the ends of the main= member; ablock fitting the angle of the truss-rod and straddling the centand abutting the main member at the oppo- :site end; a bolt and nut eonnect-ingsaid strut with said main member; and suitable stops :tfo-limit the movement of t'he str ut.

In testimony whereof we-aflix our signatures zi'n the presence-of two witnesses;

'WILLIAM A. ROBERTSON. HOWARD CARLTON.

Witnesses:

JNO. T. MADDOX, F. H'. ABBES, 

